
www.relinc.com! ! iREL!Systems!
6!
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The!REL!Corner!Transfer/Overpass!Conveyor!is!built!to!either!feed!the!first!board!flipper!or!
by-pass! the! first! flipper! and! feed! the! second! board!flipper.! ! The! overpass! portion! of! this!
conveyor!consists!of!a!stationary!lineshaft!driven!roller!bed!that!moves!the!board!over!the!
top!of!the!corner!transfer!portion!of!this!conveyor!to!feed!the!second!board!flipper.! !The!
corner!transfer!portion!of!this!conveyor!consists!of!a!stationary!lineshaft!driven!roller!bed,!
and!pop-up!belt!transfer!with!an!integral!vacuum!system.!!The!function!of!the!corner!transfer!
portion!is!to!take!board!moving!down!the!line!and!change!its!direction,!exiting!at!a!right!angle!
to!the!infeed!flow!and!depositing!the!board!on!the!first!board!flipper.!!As!the!board!enters!
the!infeed!end!on!the!roller!bed,!sensors!indicate!position!up!against!the!stop!fence.!!The!belt!
bed! then! raises! by! way! of! a! rotary! servo! motor,! lifting! the! board!off! the! rollers! and!
transferring!it!off!the!conveyor.!!The!vacuum!assist!on!the!belt!bed!helps!in!maintaining!good!
contact!with!the!conveyor!belts!to!prevent!slipping!as!the!board!accelerates.!
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The!REL!Board!Flipper!Conveyors!are!built!to!flip!the!board!from!a!face!up!orientation!to!a!
face!down!orientation.!!Flipper!#1!consists!of!an!infeed!driven!belt!bed!that!transfers!the!
board!to!the!flipper!arms!that!perform!the!flipping!process,!and!an!out-feed!driven!belt!bed!
that!transfers!the!board!to!the!corner!transfer!conveyor.!!As!the!board!enters!the!infeed!end!
on!the!belt!bed,!sensors!detect!the!position!of!the!board!and!stop!the!infeed!belts!when!the!
leading!edge!of!the!board!reaches!the!pivot!point!of!the!flipper!arm!mechanism.!!The!lifting!
arm!side!of!the! flipper! tilts! the!board!to! approximately!90!degrees!allowing!the!board!to!
transfer!to!the!lowering!arm!side!of!the!flipper.!!The!lowering!arm!then!pivots!down!to!the!
horizontal!position!and!leaves!the!board!on!the!outfeed!belt!bed!which!moves!the!panel!on!
to!the!corner!transfer!conveyor.!!Flipper!#2!is!similar!to!flipper!#1!with!the!exception!that!it!
does!not!incorporate!an!infeed!belt!bed.!!The!lifting!flipper!arms!nest!with!the!rollers!on!the!
overpass!conveyor.!
Although! the! primary! purpose! of! the! this! line! is! to! paint! the! back! side! of! the! board,! a!
secondary!function!is!to!apply!a!third!coat!of!paint!to!the!front!side!of!the!board.!!In!this!mode!
all!board!will!travel!through!Flipper!#1,!but!will!not!be!flipped.!!The!board!will!simply!pass!
through!on!the!belt!conveyors.!
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The!REL!Corner!Transfer!Conveyor!consists!of!a!stationary!line!shaft!driven!roller!bed,!and!
pop-up!belt!transfer!with!an!integral!vacuum!system.!!The!function!of!the!corner!transfer!
conveyor!is!to!take!board!moving!down!the!line!and!change!its!direction,!exiting!at!a!right!
angle!to!the!infeed!flow.!!As!the!board!enters!the!infeed!end!on!the!roller!bed,!sensors!indicate!
position!up!against!the!stop!fence.!!The!belt!bed!then!raises!by!way!of!a!rotary!servo!motor,!
lifting!the!board!off!the!rollers!and!transferring!it!off!the!conveyor.!!The!vacuum!assist!on!the!
belt!bed!helps!in!maintaining!good!contact!with!the!conveyor!belts!to!prevent!slipping!as!the!
board!accelerates.!
The!two!high!speed!transfer!conveyors!on!the!outfeed!side!of!the!flippers!work!as!the!traffic!
control!conveyors!for!metering!the!two!product!streams!back!into!one!flow!going!into!the!
board!accumulator.!
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